Method for switching current to successive sections of the stator of a long linear motor

US5136217A · kind A · utility

Assignee

• Magnetbahn GmbH · DE

Inventors

• Bernhard Hoffmann · Starnberg, DE
• Bernhard Nipper · Braunschweig, DE
• Dieter Wolff · Dormagen, DE

Key dates

• Filing date: May 9, 1991
• Grant date: Aug 4, 1992
• Expiry date: May 9, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/64
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

When the runner of a linear motor having a long stator which is divided into sections crosses from a first section to a second section, an inverter power supply, which was providing current to the first section via a first switching unit having a relay, is initially gated out. Then the main relay contact paths in the first switching unit are opened and main relay contact paths in a second switching unit for the second section are closed. Only then is the power supply gated in again.